package web.controllers;

import java.io.IOException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import modelovectorial.DocumentoPDF;
import web.utils.BrowserInformation;

import modelovectorial.core.SearchEngine;
import modelovectorial.core.SearchResult;
import soporte.web.HighlighResultMatchs;

/**
 * @project DLC Final / UTN FRC 2013
 * @date Febrero de 2013
 *
 * @author Gonzalo Arribere
 * @author Gustavo Morales
 * @author Pablo Moreno
 */

public class SearchController extends HttpServlet
{
    protected void processRequest (HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException
    {
        String pQuery = request.getParameter ("q");
        int pPage = 1;
        try
        {
            pPage = Integer.parseInt (request.getParameter ("page"));
        }
        catch (Exception e)
        {
            pPage = 1;
        }

        if (pQuery == null || pQuery.trim ().length () == 0)
        {
            response.sendRedirect("/");
        }
        else
        {
            SearchEngine searchEngine = new SearchEngine ();

            SearchResult result = searchEngine.search (pQuery, pPage);

            request.setAttribute ("stats", result.getStats ());

            if (result.results () > 0)
            {
                HighlighResultMatchs matcher = new HighlighResultMatchs (result.getProcessedQuery ());

                DocumentoPDF resultados[] = result.getDocuments ();
                for (int i = 0; i < resultados.length; i++)
                {
                    resultados[i].setDocumentFragment (matcher.doIt (resultados[i].getDocumentFragment ()));
                }

                request.setAttribute ("results", resultados);
                RequestDispatcher dispatcher = request.getRequestDispatcher
                        ((BrowserInformation.isMovileBrowser (request)) ? SitePages.MOVILE_SEARCH : SitePages.PAGE_SEARCH);
                dispatcher.forward(request, response);
            }
            else
            {

                
                RequestDispatcher dispatcher = request.getRequestDispatcher
                        ((BrowserInformation.isMovileBrowser (request)) ? SitePages.MOVILE_SEARCH_NO_RESULT : SitePages.PAGE_SEARCH_NO_RESULT);
                dispatcher.forward(request, response);
            }
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet (HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException
    {
        processRequest (request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost (HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException
    {
        processRequest (request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo ()
    {
        return "Short description";
    }// </editor-fold>
}
